what the...
Only way that happens is if you skipped a previous breakpoint event in the previous Suzuki update, back when she was relationship level 2. I'm just going to say right now, if you are giving yourself maximum relationship points with URM just to skip the grind, you are going to break stuff and miss story events. The game's logic breaks really easily if you skip the expected thresholds.
I will walk you step by step on what you can do to fix the variables to see the first bathroom scene of the current update, but I don't know what else is broken with your save and going forward you should just start with a clean one.
If you are getting the dialogue where Riko just runs away, you didn't see rl2 bp3 event. You probably also didn't see rl2 bp4 and I don't know what seeing it when you are in relationship level 3 instead of 2 would do so to be safe do all of these:
suzuki_rl2_bp3_seen = True
suzuki_rl2_bp4_seen = True
suzuki_bathroom_first_interaction_seen = True
Now you should be able to get here, and if you have affection_suzuki_breakpoint3 == True and Suzuki is on relationship level 3, you will get the new update's bathroom scene.
Seriously though, your save is fucked for something like this to happen, I don't know what else is broken and I'm not going to list all the switches that need to be fixed from having broken stuff in Suzuki's relationship level 2 progression. I recommend either making a new save or finding a clean one going forward, you are likely to see more bugs with your current one.